A large fruit tree grew atop a mountain range – on a craggy outcropping overlooking a drop of several hundred feet. An odd place for a tree to grow perhaps, but this was no ordinary tree. Unlike others fruit trees, this tree produced six distinct varieties of fruits each appearing on the branches two months apart. Six reclusive tribes lived in the mountains and each relished the fruit of the tree. Once a year, members of each tribe would make the arduous journey to the top of the craggy outcropping and gather up the yield. Two months later, the next tribe would make the same journey – each unaware of the other and each unaware of the othe...